Caster



(No Moder.

W. LIVINGSTONE (FASTER.

No. 369,191. Patented Aug. 30, 1887.

n. PEIERS. l mp-Lithographer, Walhlngion. m;

UNITED STATES PATE T OFFICE.

WILLIAM LIVINGSTONE, OF JERSEY CITY, NEW JERSEY.

CASTER.

SPECIFICATION forming part of Letters Patent No. 369,191, dated August30, 1887.

Application filed June 15, 1887. Serial No. 24l,403. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM LIVINGSTONE, a citizen of the United States,and a resident of Jersey City, county of Hudson, and State of NewJersey, have invented a new and useful Improvement in Casters, of whichthe following description, in connection with the accompanying drawings,is a specification, like letters on the drawings representing likeparts.

My improvement relates to a furniturecaster formed from sheet metal; andthe invention consists in certain features of construction andcombinations'of parts, as will be hereinafter described, and pointed outin the claims.

In the accompanying drawings, Figure 1 is a plan view of asheet-metalblank from which the wheel frame or support is stamped. Fig. 2 is a planview of a sheet-metal blank from which the locking-plate for fasteningthe arms of the frame is formed. Fig. 3 is an edge view of thewheel-frame. Fig. 4 is an edge view of the wheel-frame with thelocking-piece applied thereto. Fig. 5 is a view in side elevation of myimproved caster. Fig. 6 is a top view of the same with swivel -pinremoved. Fig. 7 is a half-elevation and halfsection of the detachedsections of the roller.'

Fig. 8 shows an end View of one of the halfshells forming the roller.Fig. 9 is a vertical section of the roller through lines or w of Fig. 8.Fig. 10 shows a transverse section of the roller through line y y ofFig. 9. Fig. 11 is a modification of the construction illustrated inFig. 3.

A, Fig. 1, is the blank of the caster-wheel frame or support, which Iform from sheet metal, and is provided with holes 9. This frame isstruck from sheet metal of the proper thickness and bent into the shapeshown in Fig. 3, forming the arms 0 c and the eye 6. The arms a 0 formsupports for the arbor, which passes through the journal-bearing g g ofthe caster-wheel. e is an eye for the screw or swivel-pin, which latterserves to fasten the caster to any article of furniture. I may form theeye 6 by bending the blank into the form shown in Fig. 11 and combiningtherewith the half-bearing m.

To prevent the arms 0 c from spreading I provide a locking-plate, B,which is constructed with outwardly-projecting shoulders b b, which arebent at right angles to the body of the plate. These shoulders I) b arethen forced down over the arms c c at h h, as shown in Fig. 4, and serveto securely lock the arms 00 against any spreading action.

Wheel G is formed of sheet-metal sections, as represented in Figs. 7 and9. Each shell or section is formed by drawing a sheet-metal blank intocup shape,thereby forming the halfrim 0 and journal-box section E. Therims 0 o are bent inwardly, and when the two cupshaped sections areconnected the inner edges of the rim 0 0 abut against each other andform asmooth and practically continuous rim. To strengthen and stiffenthe rim of the wheel and secure the sections against displacement Isupport them by a cylinder, d, which fits snugly against the innersurface of the sectional rims, and which, by reason of its ex tendedbearing and frictional surface engagement with the inner surfaces of therims, operates to impart the necessary strength to the wheel, and alsoto fasten the rims in place and cause them to form practically a solidrim.

I may fasten the half-bearing m, in Fig. 11, to part A by bolts orrivets, or by forming a double arm, I) b, on the locking-plate B, Fig.2, or by projecting lugs on half-bearing m fitting in correspondingholes in A.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination, with acaster-wheel, of the frame formed from asingle piece of metal bent to form the eye e and arms 0 c, and asheet-metal locking piece or plate bent over the same to secure thearms, substantially in the manner and for the purposes described.

2. The combination, witha sheet-metal caster-frame, of a locking-pieceformed with shoulders which are bent down over the frame adjoining theeye-piece formed therein, for the purpose and substantially in themanner described.

3. A casterwheel composed of two cup shaped shells, each shell having aninwardlymy invention I have signed my name in presprojeeting section andajournal-box formed enee of two witnesses this 15th day of Oeto- IOintegral therewit11,whereby the complete jonrber, 1886. nal-box isinclosed within the sides and pe- I T T 1 5 riphery of the wheel, and astrengthening-cyl- "VILLIAM LIVI'L GSTOL inder fitting against the innersurface of the Vitnesses: sectional periphery of the caster-wheel. HENRYO. BANKS,

In testimony that I claim the foregoing as E. T. THOMAS.

